Motor RPM clarification - Page 2
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  1. #21
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    Dec 2016
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    Quote Originally Posted by cyanidekid View Post
    good info marka, that's one crack motor shop you found, care to share where they are?
    KJ Electric in Syracuse NY. In the end, i kept my old motor. They disassembled it, steam cleaned it, meggered it, changed the bearings, soldered on new leads and painted it. It was pricey, comparable to the cost of a new motor but i didn't want to mess changing sheave sizes and remounting a different frame size motor.

  2. #22
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    I have done what the OP is considering. A 5HP Black Max motor 1800rpm, with OEM gearbox 6:1 ratio. I changed the original spindle pulley from a 5" to 7". I rarely run above 2K rpm, But the motor tops out a 4500rpm, which would be 4k rpm spindle. Uses a Hitachi vfd, conversion done 14 years ago.


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